z2: HTTP report query aliases and Gemtext Content-Type

Accept Category, Metric, and OutputFormat as alternate query keys
alongside category, metric, output-format. Serve Gemtext reports
with text/gemini; assert Content-Type in daemon tests.

Builds on y2 daemon GET /report reusing ParseReportQuery and
WriteReports.

Made-with: Cursor

2 files changed, 44 insertions, 0 deletions

diff --git a/internal/daemon/daemon.go b/internal/daemon/daemon.go
index 4e2402f..a4b1a3e 100644
--- a/internal/daemon/daemon.go
+++ b/internal/daemon/daemon.go
@@ -101,6 +101,8 @@ func reportContentType(f goprecords.OutputFormat) string {
 	switch f {
 	case goprecords.FormatMarkdown:
 		return "text/markdown; charset=utf-8"
+	case goprecords.FormatGemtext:
+		return "text/gemini; charset=utf-8"
 	default:
 		return "text/plain; charset=utf-8"
 	}
diff --git a/internal/daemon/daemon_test.go b/internal/daemon/daemon_test.go
index 38878fa..b140c9e 100644
--- a/internal/daemon/daemon_test.go
+++ b/internal/daemon/daemon_test.go
@@ -54,6 +54,9 @@ func TestReport(t *testing.T) {
 	if res.StatusCode != http.StatusOK {
 		t.Fatalf("status %d", res.StatusCode)
 	}
+	if ct := res.Header.Get("Content-Type"); ct != "text/plain; charset=utf-8" {
+		t.Fatalf("Content-Type %q", ct)
+	}
 	b, err := io.ReadAll(res.Body)
 	if err != nil {
 		t.Fatal(err)
@@ -63,6 +66,45 @@ func TestReport(t *testing.T) {
 	}
 }
 
+func TestReportQueryAliases(t *testing.T) {
+	fixtures := filepath.Join("..", "..", "fixtures")
+	srv := httptest.NewServer(Handler(fixtures))
+	defer srv.Close()
+	res, err := http.Get(srv.URL + "/report?Category=Host&Metric=Uptime&limit=2&OutputFormat=Markdown")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer res.Body.Close()
+	if res.StatusCode != http.StatusOK {
+		t.Fatalf("status %d", res.StatusCode)
+	}
+	if ct := res.Header.Get("Content-Type"); ct != "text/markdown; charset=utf-8" {
+		t.Fatalf("Content-Type %q", ct)
+	}
+	b, _ := io.ReadAll(res.Body)
+	body := string(b)
+	if !strings.Contains(body, "# Top") || !strings.Contains(body, "```") {
+		t.Fatalf("expected markdown heading and fence, got %q", b)
+	}
+}
+
+func TestReportGemtextContentType(t *testing.T) {
+	fixtures := filepath.Join("..", "..", "fixtures")
+	srv := httptest.NewServer(Handler(fixtures))
+	defer srv.Close()
+	res, err := http.Get(srv.URL + "/report?output-format=Gemtext&limit=2")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer res.Body.Close()
+	if res.StatusCode != http.StatusOK {
+		t.Fatalf("status %d", res.StatusCode)
+	}
+	if ct := res.Header.Get("Content-Type"); ct != "text/gemini; charset=utf-8" {
+		t.Fatalf("Content-Type %q", ct)
+	}
+}
+
 func TestReportBadQuery(t *testing.T) {
 	srv := httptest.NewServer(Handler(t.TempDir()))
 	defer srv.Close()